平衡方程和运动学关系式是与材料类无关的.The equations of equilibrium and kinematic relations are independent of the type of material.机械系统的运动学与动力学包括刚体的平面移动.Kinematics and dynamics of mechanical systems including rigid bodies in plane motion....
the descriptive passages in the novel小说中的描写性段落He wrote a book descriptive of the frontier provinces.他写了一本描写边疆各省的专著.Write a descriptive passage about spring.写一篇描写春天的短文....
Bob: Who is the winner of the running race?鲍勃: 是谁赢得了赛跑的冠军?What is longest running race in the Olympic Games called?奥运会上最长的赛跑叫什么名字?Can you tack ( part ) in the running race tomorrow?你能参加明天的跑步比赛 吗 ?...